2014/10/15 下午 10:11:45

iphone Programming Glossary: mygradient

How to draw a gradient line (fading in/out) with Core Graphics/iPhone?

http://stackoverflow.com/questions/1303855/how-to-draw-a-gradient-line-fading-in-out-with-core-graphics-iphone

size_t num_locations 2 CGFloat locations 2 1.0 0.0 CGFloat components 8 0.0 0.0 0.0 1.0 1.0 1.0 1.0 1.0 CGGradientRef myGradient CGGradientCreateWithColorComponents myColorspace components locations num_locations CGPoint myStartPoint myEndPoint myStartPoint.x.. myStartPoint.x 0.0 myStartPoint.y 0.0 myEndPoint.x 0.0 myEndPoint.y 10.0 CGContextDrawLinearGradient context myGradient myStartPoint myEndPoint 0 But how could I draw a line with a gradient i.g. fading in from black to white and maybe fading..

Applying background gradient to a Grouple table cell

http://stackoverflow.com/questions/1979165/applying-background-gradient-to-a-grouple-table-cell

different way of doing this void drawRect CGRect rect CGContextRef c UIGraphicsGetCurrentContext CGGradientRef myGradient CGColorSpaceRef myColorspace size_t num_locations 2 CGFloat locations 2 0.0 1.0 CGFloat components 8 0.8f 0.8f 0.8f 1.0f.. Red Green Blue Alpha. 0.9f 0.9f 0.9f 1.0 Top Colour Red Green Blue Alpha. myColorspace CGColorSpaceCreateDeviceRGB myGradient CGGradientCreateWithColorComponents myColorspace components locations num_locations CGColorSpaceRelease myColorspace.. startPoint.x 0.0 startPoint.y self.frame.size.height endPoint.x 0.0 endPoint.y 0.0 CGContextDrawLinearGradient c myGradient startPoint endPoint 0 const CGFloat topSepColor 0.8f 0.8f 0.8f 1.0f Cell Seperator Colour Top CGGradientRelease myGradient..

Smoothing a rounded stroke in Core Graphics

http://stackoverflow.com/questions/2181279/smoothing-a-rounded-stroke-in-core-graphics

cell CGContextRef c UIGraphicsGetCurrentContext CGColorSpaceRef myColorspace CGColorSpaceCreateDeviceRGB CGGradientRef myGradient nil CGFloat components 8 TABLE_CELL_BACKGROUND CGContextSetStrokeColorWithColor c UAColor colorWithWhite 0.7 alpha 1 CGColor.. 2 0.0 1.0 CGFloat mycomponents 8 TABLE_CELL_BACKGROUND CGColorSpaceRef myColorspace CGColorSpaceCreateDeviceRGB myGradient CGGradientCreateWithColorComponents myColorspace mycomponents locations 2 CGContextDrawLinearGradient c myGradient CGPointMake.. myGradient CGGradientCreateWithColorComponents myColorspace mycomponents locations 2 CGContextDrawLinearGradient c myGradient CGPointMake minx miny CGPointMake minx maxy 0 CGContextRestoreGState c CGContextAddPath c path CGContextStrokePath c What..

Make Background of UIView a Gradient Without Sub Classing

http://stackoverflow.com/questions/844710/make-background-of-uiview-a-gradient-without-sub-classing

CGContextRef bitmapContext CGBitmapContextCreate NULL 320 480 8 4 320 colorSpace kCGImageAlphaNoneSkipFirst allocate myGradient CGFloat locationList 0.0f 1.0f CGFloat colorList 0.0f 0.0f 0.0f 1.0f 0.0f 0.0f 0.0f 0.0f CGGradientRef myGradient CGGradientCreateWithColorComponents.. myGradient CGFloat locationList 0.0f 1.0f CGFloat colorList 0.0f 0.0f 0.0f 1.0f 0.0f 0.0f 0.0f 0.0f CGGradientRef myGradient CGGradientCreateWithColorComponents colorSpace colorList locationList 2 Draw Gradient Here CGContextDrawLinearGradient bitmapContext.. colorSpace colorList locationList 2 Draw Gradient Here CGContextDrawLinearGradient bitmapContext myGradient CGPointMake 0.0f 0.0f CGPointMake 320.0f 480.0f 0 Create a CGImage from context CGImageRef cgImage CGBitmapContextCreateImage..